This study focuses on understanding the physicochemical principles for the preparation of high drug-loaded microgranules with a desired size distribution and mechanical properties. Mesalamine was selected as a model drug, and microgranulation was performed using an extruder and a conical screen mill.
Thermal properties of powders are critical material attributes that control temperature rise during tableting and roll compaction. In this study, various analytical methods were used to measure the thermal properties of widely used pharmaceutical excipients including microcrystalline cellulose (MCC) of three different grades (Avicel PH 101; Avicel PH 102 and Avicel DG), lactose and mannitol.